function revealOnScroll() {
    var scrolled = $(window).scrollTop();
    $(".aboutus .lead,.news .list-unstyled .media").each(function () {
        var current = $(this),
            w_height = $(window).outerHeight(),
            offsetTop = current.offset().top;
        if (scrolled + w_height > +50 + offsetTop) {
            current.addClass("animated fadeInDown");
        } else {
            current.removeClass("animated fadeInDown");
        }
    });
}
$(window).on("scroll", revealOnScroll);